8390344 has 8 divisors (see below), whose sum is σ = 15731910. Its totient is φ = 4195168.

The previous prime is 8390329. The next prime is 8390351. The reversal of 8390344 is 4430938.

It can be written as a sum of positive squares in only one way, i.e., 5466244 + 2924100 = 2338^2 + 1710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524389 + ... + 524404.

Almost surely, 2^8390344 is an apocalyptic number.

It is an amenable number.

8390344 is a deficient number, since it is larger than the sum of its proper divisors (7341566).

8390344 is a wasteful number, since it uses less digits than its factorization.

8390344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048799 (or 1048795 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 8390344 is about 2896.6090519778. The cubic root of 8390344 is about 203.2013500437.

The spelling of 8390344 in words is "eight million, three hundred ninety thousand, three hundred forty-four".